As of Wednesday afternoon, Debby had maximum sustained winds of 40 miles per hour as it moved east at 13 mph. The storm's center has become poorly defined and was about 180 miles east of St. Augustine, Florida.

The National Hurricane Center says this is the first time four tropical storms have been recorded before July 1 during the Atlantic hurricane season since record keeping began in 1851.

Alberto was the first storm this year. It formed off the South Carolina coast on May 19.